[Tests] NFC: Update lifetime tests to avoid overloading on borrowing/consuming attributes

Overloading like that should not be allowed but that would have to
be addressed separately, meanwhile let's add a label to `consuming`
init to make sure that the test no longer relies on the type-checker
hacks.

Author: xedin

test/SILOptimizer/lifetime_dependence/lifetime_dependence_scope_fixup.swift

@@ -32,7 +32,9 @@ struct View : ~Escapable {
     self.ptr = k.ptr
     self.c = k.c
   }
-  init(_ k: consuming View) {
+  // This overload requires a separate label because overloading
+  // on borrowing/consuming attributes is not allowed
+  init(consumingView k: consuming View) {
     self.ptr = k.ptr
     self.c = k.c
   }
@@ -65,7 +67,7 @@ func consume(_ o : consuming MutableView) {}
 
 @lifetime(x)
 func getConsumingView(_ x: consuming View) -> View {
-  return View(x)
+  return View(consumingView: x)
 }
 
 @lifetime(borrow x)